What is CVE-2016-6364?

CVE-2016-6364 is a high-severity vulnerability in Cisco Unified Communications Manager, classified under Information Disclosure. CVSS score: 7.5/10. Published 2016-08-23.

How severe is CVE-2016-6364?

High severity. CVSS v3 base score is 7.5 out of 10.

Information disclosure in Cisco Unified Communications Manager

CVE-2016-6364

The User Data Services (UDS) API implementation in Cisco Unified Communications Manager 11.5 allows remote attackers to bypass intended access restrictions and obtain sensitive information via unspecified API calls, aka Bug ID CSCux67855.

Vulnerability class: Information Disclosure

Published 2016-08-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.022 (81.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Cisco Unified Communications Manager — versions 11.5.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.securityfocus.com/bid/92517 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1036650 (VDB Entry, Third Party Advisory, vdb-entry)
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2016-6364?: CVE-2016-6364 is a high-severity vulnerability in Cisco Unified Communications Manager, classified under Information Disclosure. CVSS score: 7.5/10. Published 2016-08-23.
How severe is CVE-2016-6364?: High severity. CVSS v3 base score is 7.5 out of 10.